The service-level manager relies on the other areas of the service delivery process to provide the necessary support which ensures the agreed services are provided in a cost-effective, secure and efficient manner.
Availability management
Availability management targets allows organizations to sustain the IT service-availability to support the business at a justifiable cost. The high-level activities are realizing availability requirements, compiling availability plans, monitoring availability, and monitoring maintenance obligations.
Availability management addresses the ability of an IT component to perform at an agreed level over a period of time.
• Reliability: Ability of an IT component to perform at an agreed level at described conditions.
• Maintainability: The ability of an IT component to remain in, or be restored to an operational state.
• Serviceability: The ability for an external supplier to maintain the availability of component or function under a third-party contract.
• Resilience: A measure of freedom from operational failure and a method of keeping services reliable. One popular method of resilience is redundancy.
• Security: A service may have associated data. Security refers to the confidentiality, integrity, and availability of that data. Availability gives a clear overview of the end-to-end availability of the system.
Capacity management
Capacity management supports the optimum and cost-effective provision of IT services by helping organizations match their IT resources to business demands. The high-level activities include:
• application sizing
• workload management
• demand management
• modelling
• capacity planning
• resource management
• performance management